Induced photodegradation of quinoxaline based copolymers for photovoltaic applications
Artikel i vetenskaplig tidskrift, 2016
We report here the synthesis and characterization of a series of p-type copolymers, which combine a fluorinated quinoxaline (FQ) acceptor unit either with a differently substituted benzodithiophene (BDT) or an unsubstituted thieno[3,2-b]thiophene (TT). The effect of the structural modifications on the photochemical stability of the resulting films is investigated and then correlated with the photovoltaic performance and lifetime measurements of corresponding photovolatic devices. To this end, we firstly studied the intrinsic stability of each polymer film by monitoring the UV-vis absorption decay, under simulated sunlight, as a function of ageing time. Bulk heterojunction solar cells, based on these polymers as donor materials, were fabricated and tested. Beside the initial values, we monitored the photovoltaic performance during prolonged light soaking in order to evaluate and compare the photostability of more complex systems such as working solar cells.
Lifetime
Conjugated polymers
Polymer solar cells
Photodegradation
Författare
Desta Antenehe Gedefaw
Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi
Marta Tessarolo
Istituto Per Lo Studio Dei Materiali Nanostrutturati, Rome
M. Prosa
Istituto Per Lo Studio Dei Materiali Nanostrutturati, Rome
Margherita Bolognesi
Patrik Henriksson
Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi
Wenliu Zhuang
Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi
Mirko Seri
Istituto per la Sintesi Organica e la Fotoreattività
Michele Muccini
Istituto Per Lo Studio Dei Materiali Nanostrutturati, Rome
Mats Andersson
Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi
Solar Energy Materials and Solar Cells
0927-0248 (ISSN)
Vol. 144 150-158SUstainable Novel FLexible Organic Watts Efficiently Reliable (SUNFLOWER)
Europeiska kommissionen (FP7), 2011-10-01 -- 2016-03-31.
Ämneskategorier
Polymerkemi
Styrkeområden
Materialvetenskap
DOI
10.1016/j.solmat.2015.08.015